<template>
	<div class="child2">
		<h3>子组件2</h3>
		<h4>电脑：{{ computer }}</h4>
		<h4>哥哥给的玩具：{{ toy }}</h4>
	</div>
</template>

<!-- 安装 vue 路由模块  npm install vue-router -->

<!-- npm i vite-plugin-vue-setup-extend -D -->
<script setup lang="ts" name="Child2">
import { onUnmounted, ref } from 'vue'
import emitter from '@/utils/emitter'
// 数据
let computer = ref('联想')
let toy = ref('')

//给emitter绑定send-tony事件
emitter.on('send-toy', (val: any) => {
	toy.value = val
})

//在组件卸载时解绑send-toy事件
onUnmounted(() => {
	emitter.off("send-toy")
})

</script>

<style scoped>
.child2 {
	margin-top: 50px;
	background-color: orange;
	padding: 10px;
	box-shadow: 0 0 10px black;
	border-radius: 10px;
}
</style>